Cabin of a tractor



FIG. 1 is a right side view of a cabin of a tractor showing our new design; the left side view being a mirror image thereof;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a right side view with broken lines illustrating the environment in which the cabin is used.

The broken lines showing the tractor in FIG. 6 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a cabin of a tractor, as shown and described. 